Snowflakes are like letters from the sky, each crystal a note describing the atmosphere ... what influences the different structures and what to expect for future cold seasons.

Like snowflakes ... now know that H 2 O takes on a six-sided structure because of the way hydrogen bonds link water molecules. Kepler’s crystal ponderings laid the groundwork for the field ...

This rare 12-armed crystal is the result of two ... The six arms of the typical snowflake derive from the molecular structure of water. Kljatov told RFE/RL that some days the snowflakes have ...

Join Kenneth Libbrecht, Professor of Physics at Caltech, during this free interactive recording as he examines how the ice surface structure changes with temperature, how this affects ice crystal ...